package com.itheima.demo07.Integer;

public class Demo01Integer {
    public static void main(String[] args) {
        Integer in1 = new Integer(30);
        System.out.println(in1);
        Integer in2 = new Integer("30");
        System.out.println(in2);
        Integer in3 = Integer.valueOf(1);
        System.out.println(in3);
        Integer in4 = Integer.valueOf("1");
        System.out.println(in4);
        System.out.println("=================");
        int i = in1.intValue();
        System.out.println(i);
    }
}
